//package xin.cymall.filter;
//
//import org.apache.shiro.web.filter.authc.BasicHttpAuthenticationFilter;
//import org.springframework.http.HttpStatus;
//import org.springframework.web.bind.annotation.RequestMethod;
//
//import xin.cymall.utils.JwtToken;
//
//import javax.servlet.ServletRequest;
//import javax.servlet.ServletResponse;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//public class JwtFilter extends BasicHttpAuthenticationFilter{
//	 /**
//     * 执行登录认证
//     *
//     * @param request
//     * @param response
//     * @param mappedValue
//     * @return
//     */
//    @Override
//    protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) {
//        try {
//            executeLogin(request, response);
//            return true;
//        } catch (Exception e) {
//            return false;
//        }
//    }
// 
//    /**
//     *
//     */
//    @Override
//    protected boolean executeLogin(ServletRequest request, ServletResponse response) throws Exception {
//        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
//        String token = httpServletRequest.getHeader("Authorization");
// 
//        JwtToken jwtToken = new JwtToken(token);
//        // 提交给realm进行登入，如果错误他会抛出异常并被捕获
//        getSubject(request, response).login(jwtToken);
//        // 如果没有抛出异常则代表登入成功，返回true
//        return true;
//    }
// 
// 
// 
//    /**
//     * 对跨域提供支持
//     */
//    @Override
//    protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
//        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
//        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
//        httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
//        httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
//        httpServletResponse.setHeader("Access-Control-Allow-Headers", httpServletRequest.getHeader("Access-Control-Request-Headers"));
//        // 跨域时会首先发送一个option请求，这里我们给option请求直接返回正常状态
//        if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
//            httpServletResponse.setStatus(HttpStatus.OK.value());
//            return false;
//        }
//        return super.preHandle(request, response);
//    }
//}
